Automatic and Dynamic Logon Mechanism in Satellite Networks

a technology of automatic and dynamic logon and satellite network, which is applied in the direction of radio transmission, electrical equipment, broadcast transmission system, etc., can solve the problems of unbalanced traffic distribution between traffic processors, service downtime, and complicated allocation plan

Active Publication Date: 2009-12-24
GILAT SATELLITE NETWORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014]In one aspect of this invention, each traffic processor may transmit a status message containing a status profile that may be comprised of one or more characteristics and / or metrics relating to the traffic processor itself or to the traffic it may process. The message may further include information that may be used by remote terminals to identify the traffic processor and to facilitate a log on procedure of a remote terminal to the traffic processor. The status message may be of a variable length and a self describing format, which may enable flexibility as additional information items may be added.
[0016]In yet another aspect of this invention, remote terminals may be configured to receive status messages from traffic processors, to calculate a rank figure for each traffic processor based on information included in received status messages, and thereafter to use said calculated rank figures for at least the purpose of selecting a suitable traffic processor. By using this automatic and dynamic selection mechanism, one or more of the downsides of the static allocation mechanism previously described may potentially be improved or resolved.

Problems solved by technology

It should be appreciated that the larger the network becomes (i.e. containing more remote terminals and additional traffic processors), the allocation plan may become more complicated and much harder to maintain through manual configuration.Furthermore, changing the allocation plan and the static configuration derived from that plan may require service down-time, i.e. a period during which connectivity to end users could not be provided either for the entire network or for parts of it.
Such a change in allocation plan may be necessary whenever traffic processors are either added or removed from the hub.b. Load BalancingIn a network containing more than one traffic processor, using a static allocation plan may lead to an unbalanced distribution of traffic between the traffic processors.
Unbalanced distribution may be a result of many reasons including mistakes in the allocation plan, mistakes in its implementation and changes in traffic profiles of remote terminals over time.c. RedundancySince allocation of remote terminals to traffic processors is static, failure of a traffic processor may result in immediate loss of service for all remote terminals allocated to the failing traffic processor.
Recovery from such failure may require changing the allocation plan and implementing the changes, or replacing the faulty traffic processor.
Both recovery options may take considerable time to complete, during which all the remote terminals allocated to the failing traffic processor remain without service.

Method used

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  • Automatic and Dynamic Logon Mechanism in Satellite Networks
  • Automatic and Dynamic Logon Mechanism in Satellite Networks
  • Automatic and Dynamic Logon Mechanism in Satellite Networks

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Embodiment Construction

[0026]FIG. 1 shows satellite communication network 100 comprised of central hub 120 and plurality of remote terminals (VSATs) 110a to 110n, which communicate with hub 120 via satellite 101. Hub 120 further includes at least one access controller 121 and at least two traffic processors 122 coupled to access controller(s) 121. Access controller(s) 121 may be configured to implement a satellite access protocol for at least the purpose of facilitating the transfer of data between remote terminals 110 and traffic processors 122. Traffic processors 122 may be configured to perform one or more functions in regard to the exchanged data. These functions may include routing of data packets and / or data frames to and from remote terminals, accelerating traffic in one or more protocols (e.g. TCP, HTTP, etc), compressing and decompressing data, encrypting and decrypting data, etc. Hub 120 may further include forward link module 123 for at least the purpose of transmitting data towards the remote ...

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Abstract

In a satellite communication network, a link between a remote terminal and a traffic processor located at the hub may be used for providing services over a satellite link, such as traffic routing, protocol acceleration, data compression and data encryption. Aspects of this invention relate to methods and apparatus for automatically and dynamically associating remote terminals with traffic processors. These methods may be used for simplifying the satellite network's configuring process, especially for large scale networks, for offering load balancing between traffic processors and for offering an efficient automatic redundancy mechanism when a traffic processor malfunctions.

Description

[0001]The present application is a non-provisional of U.S. Provisional application Ser. No. 61 / 074,429, filed Jun. 20, 2008, entitled “Automatic and Dynamic Logon Mechanism in Satellite Networks,” the contents of which are incorporated herein by reference in their entirety for all purposes.FIELD OF THE INVENTIONBACKGROUND[0002]A satellite communication network often includes a central hub and plurality of remote terminals (e.g. VSATs). The hub may further include one or more access controllers and one or more traffic processors. While access controllers may be configured to handle satellite access protocols and connectivity up to the second layer of the OSI model, traffic processors may be configured to perform numerous tasks related to higher layers of the OSI model, such as but not limited to making routing decisions, traffic acceleration, compression and decompression of data, encryption and decryption of data, etc. Each remote terminal may be configured to log on to one traffic ...

Claims

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Application Information

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IPC IPC(8): H04B7/185H04H20/71
CPCH04B7/18517H04B7/18584H04B7/18523
InventorLAISH, ISACC BENGOLDSHTEIN, MOTIYITZHAKI, ELDADNACHMAN, ELAD
OwnerGILAT SATELLITE NETWORKS